Effect and mechanism of co-depressant of calcite and sodium hexametaphosphate on scheelite flotation

被引：0
|
作者：
Wang J.-Z. [1 ,2 ]
Yin W.-Z. [2 ]
Sun Z.-M. [3 ]
机构：
[1] School of Chemistry and Chemical Engineering, Xi’an University of Science and Technology
[2] School of Resource and Civil Engineering, Northeastern University, Shenyang
[3] State Key Laboratory of Comprehensive Utilization of Low Grade Refractory Gold Resources, Shanghang
来源：
Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2018年 / 28卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Calcite; Calcium ions; Flotation; Scheelite; Sodium hexametaphosphate;
D O I：
10.19476/j.ysxb.1004.0609.2018.08.19
中图分类号：
学科分类号：
摘要：
The depressing effect of sodium hexametaphosphate and calcite on scheelite recovery was studied by flotation tests, dissolution measurements and theoretical calculation. The results indicate that the synergistic effect existed between sodium hexametaphosphate and calcite has significant depressing effect on the scheelite flotation. Calcite will enhance the depression of sodium hexametaphosphate with the action of calcium ions on its surface. The carbonate ions have little effect on the depressing effect of sodium hexametaphosphate, instead, the presence of excess carbonate ions can decrease the synergistic depressing effect of calcite and sodium hexametaphosphate on scheelite flotation. The sodium hexametaphosphate can not only react with the scheelite, but also it will deadsorb the calcium ions of calcite, thus increases the calcium ions concentration in solution, which is benefit to the depression of scheelite flotation. © 2018, Science Press. All right reserved.
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页码：1645 / 1652
页数：7
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